View full sizePolice hope this image of a ring can help the public identify its wearer, a woman who was killed by a train in South Brunswick.

SOUTH BRUNSWICK — Authorities are seeking the public’s assistance in identifying a woman who was struck and killed by an Amtrak train in South Brunswick on Friday night.

The woman was struck around 7:30 p.m. near where East New Road meets the train tracks, authorities said.

South Brunswick police said the woman was carrying no identification, but was believed to be between her mid-40s and 60 years old. She was white, with shoulder-length brown hair and blue eyes, and was wearing a Polo Ralph Lauren sweatsuit and size 8.5 Merrell-brand shoes.

Police said she also had on a large ring with a single large, clear, square gemstone bordered by a ring of smaller, clear gemstones.

Anyone with information is asked to call South Brunswick Police Detective Jeff Russo at (732) 329-4646.